<nz-input-group [nzSuffix]="suffixTemplateInfo" [nzPrefix]="prefixTemplateUser">
  <input type="text" nz-input placeholder="Enter your username" />
</nz-input-group>
<ng-template #prefixTemplateUser><i nz-icon nzType="user"></i></ng-template>
<ng-template #suffixTemplateInfo>
  <i nz-icon nz-tooltip nzTooltipTitle="Extra information" nzType="info-circle"></i>
</ng-template>
